$121.99 – FNIRSI SG-004A Signal Generator 0-24V 4-20mA (Banggood, Aliexpress: Thermocouple Signal, Program Output, DC Voltage / Current, RTD Signal, 24V Power Distribution Output, Analog Source (the best price with coupon)).
FNIRSI SG-004A Signal Generator 0-24V 4-20mA is for $121.99 (in Banggood). Price history, coupons and price alert are available on this page. What is best price?
Latest price update (UTC time):
Banggood ($121.99)
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database. What about the price? Hmmm, price is higher than average (which is $114.99 right now), so better set price alert down below…
Link: Banggood product page
Price: $121.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGCL88, BG51943, BGM1TOOLS88, BGMARCHSALE, BG20236Tool, BGTOOS729, BG8FORMULAMX, BGBFDAY8, BGNEWYEAR8, BGSPRING8OFF, BGHONEYSP
(there’s a little possibility that old coupon will work)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for FNIRSI SG-004A Signal Generator 0-24V 4-20mA is here. The lowest price was: $102.99.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).